| FATOS XHAFA, PhD
Professor Titular d'Universitat Dept de Llenguatges i Sistemes Informàtics Universitat Politècnica de Catalunya Barcelona, Spain. |
Visiting Professor, Birkbeck
College, University of
London, UK |
 |
|
Papers
in
Refereed International Journals
|
[53] Vincent Seguí, Fatos Xhafa. Evaluation of contact synchronization algorithms for the Android platform.
Accepted in Computers and Mathematics with Applications, Elsevier, 2011.
Published
[52] Joanna Kolodziej, Fatos Xhafa. Integration of Task Abortion and Security Requirements in GA-based
Meta-Heuristics for Independent Batch Grid Scheduling. Computers and Mathematics with Applications,
DOI: 10.1016/j.camwa.2011.07.038, 63 (2012) 350–364, Elsevier, 2012.
[51] Xhafa, F., Sánchez, Ch., Barolli, B. and Spaho, E. Evaluation of Genetic Algorithms for Router Nodes Placement in
Wireless Mesh Networks. Journal of Ambient Intelligence and Humanized Computing, (2010) 1:271-282, Springer.
[50] J. Kolodziej, F. Xhafa, Modern Approaches To Modelling User Requirements On Resource And Task Allocation In
Hierarchical Computational Grids, the International Journal of Applied Mathematics and Computer Science (AMCS),
2011, Vol. 21, No. 2, 243–257 DOI: 10.2478/v10006-011-0018-x.
[49] Marenglen Biba, Fatos Xhafa, Floriana Esposito, Stefano Ferilli. Stochastic Simulation and Modelling of Metabolic
Networks in a Machine Learning Framework. Simulation Modelling Practice and Theory, Elsevier, pp. 1957-1966, 2011,
DOI information: 10.1016/j.simpat.2011.05.002.
[48] Fatos Xhafa, Claudi Paniagua, Leonard Barolli, Santi Caballé. Using Grid Services to Parallelize IBM's Generic Log
Adapter. The Journal of Systems and Software 84 (2011) 55-62 doi:10.1016/j.jss.2010.08.029 Elsevier
[47] Fatos Xhafa, Sabri Pllana, Leonard Barolli, and Evjola Spaho. Grid and P2P Middleware for Wide-Area Parallel
Processing Concurrency and Computation: Practice and Experience, Wiley, DOI: 10.1002/cpe.1657, VOLUME 23, No. 5
APRIL 2011, pp. 458-476.
[46] Kolodziej, J. and Xhafa, F. Meeting Security and User Behaviour Requirements in Grid Scheduling.
Simulation Modelling Practice and Theory, International Journal of the Federation of European Simulation Societies,
Elsevier. doi:10.1016/j.simpat.2010.06.007 Vol 19 (2011) 213-226, Elsevier.
[45] Caballé, S., Daradoumis, T., Xhafa, F., Conesa, J. Enhancing Knowledge Management in Online Collaborative
Learning. International Journal of Software Engineering and Knowledge Engineering (IJSEKE). Vol. 20, No. 4, pp.
485-497. World Scientific. DOI: 10.1142/S0218194010004839.
[44] Xhafa, F., Barolli, L. and Sanchez, Ch. Local Search Algorithms for Efficient Router Nodes Placement in Wireless
Mesh Networks. Journal of Intelligent Manufacturing, Springer. Published online, May 2010.
[43] Xhafa, F., Paniagua, C., Barolli, L. and Caballé, S. A Parallel Grid-based Implementation for Real Time Processing of
Event Log Data in Collaborative Applications, Int. J. Web and Grid Services, IJWGS, vol. 6, issue 2, 124–140, 2010.
[42] Fatos Xhafa, Ajith Abraham. Computational models and heuristic methods for Grid scheduling problems,
Future Generation Computer Systems, 26 (2010) 608-621. Elsevier
[41] V. Kolici, K. Matsuo, L. Barolli, F. Xhafa, A. Durresi, R. Miho: Application of a JXTA-Overlay P2P System for End-Device
Control. Multimedia Tools and Applications, Springer. Available Online March 2010 (DOI10.1007/s11042-010-0499-x)
[40] Fatos Xhafa, Leonard Barolli, Santi Caballé, Raul Fernández. Efficient PeerGroup Management in JXTA-Overlay
P2P System for Developing Groupware Tools, Journal of Supercomputing, Springer. Available Online
(DOI 10.1007/s11227-009-0334-1)
[39] Arjan Durresi, Mimoza Durresi, Leonard Barolli, Fatos Xhafa: MPLS Traffic Engineering for Multimedia on Satellite
Networks, Journal of Multimedia Networking and Applications, Vol.5 No.1, 3-11, March, 2009 , Rinton Press
[38] Fatos Xhafa Fatos Xhafa, Leonard Barolli, Enric Jaen, Santi Caballé. Evaluation of P2P multimedia clustering
techniques in JXTA-Overlay. Multimedia Systems, Springer. Volume 15, Issue 5 (2009), pp. 283-293 (Published Online)
[37]
Groups' Activity in Collaborative e-Learning. Int. J. Learning Technology, Volume 4, Issue 1/2, 2009
[36] A. Doci, W. Springer and F. Xhafa. Impact of the Dynamic Membership in the Connectivity Graph of the
Wireless Ad hoc Networks. Scalable Computing: Practice and Experience (SCPE), Vol. 10, No. 2, 2009.
[35] Fatos Xhafa, Leonard Barolli, David Martos. A web interface for the HyperSim-G Grid simulation package.
Int. J. Web and Grid Services, Volume 5, Number 1 / 2009, pages: 17 - 29, Inderscience Enterprises Ltd.
[34] J. Anno, L. Barolli, A. Durresi, F. Xhafa, A. Koyama,Performance Evaluation of Two-Fuzzy based Cluster Head
Selection Systems for Wireless Sensor Networks, Mobile Information Systems, Vol. 4, Nº 4 / 2008, 297-312.
[33] Keita Matsuo, Leonard Barolli, Fatos Xhafa, Akio Koyama, Arjan Durresi. New Functions for Stimulating Learners
Motivation in a Web-based E-learning System International Journal of Distance Education Technologies, iDEA GROUP
PUB. ISSN:1539-3100, JDET, Vol. 6, No. 4. 2008
[32] Leonard Barolli, Fatos Xhafa, Akio Koyama, Arjan Durresi. An Intelligent Fuzzy-Based Handover System For Wireless
Cellular Networks And Its Performance Evaluation, Journal of Mobile Multimedia, Vol. 4, No. 3 (2008) Rinton Press
[31] Arta Doci, Fatos Xhafa: WIT –A Wireless Integrated Traffic Model, Mobile Information Systems, 4 (2008) 219–235.
IOS Press.
[30] Keita Matsuo, Leonard Barolli, Fatos Xhafa: Implementation of a JXTA-based P2P e-Learning System and Its
Performance Evaluation, IJWIS, Volume: 4 Issue: 3 Page: 352 - 371, 2008
[29] Fatos Xhafa, Javier Carretero, Bernabé Dorronsoro, Enrique Alba: Tabu Search Algorithm for Scheduling
Independent Jobs in Computational Grids, Computer And Informatics Journal, Vol. 28, No 2, 2009, pp 237-249
- [28]
Xhafa, Fatos; Duran,
Bernat; Abraham, Ajith; Dahal,
Keshav. Tuning Struggle Strategy
in Genetic Algorithms for
- Scheduling in Computational Grids. Neural Network World. Vol. 18, No. 3, 209-225, Jul, 2008.
- [27]
L.
Barolli, F. Xhafa, A. Durresi, A.
Koyama, “A Context-Aware
Fuzzy-Based Handover System for
Wireless Cellular
-
Networks
and Its Performance Evaluation”, Journal
of Mobile Multimedia (JMM),
Vol. 4. No.3/4, pp. 241-258, 2008.
- [26]
F. Xhafa, L. Barolli, T.
Daradoumis, R. Fernandez, S.
Caballé. Extension and evaluation
of JXTA protocols for
-
supporting
reliable P2P distributed
computing. International
Journal of Web Information
Systems, Vol 4 (1),
121-135,
-
2008, Emerald Pub.
[25] Fatos Xhafa, Leonard Barolli, Thanasis Daradoumis, Raul Fernandez, Santi Caballé: Jxta-Overlay: An interface
for efficient peer selection in P2P JXTA-based systems. Computer Standards & Interfaces 31(5): 886-893 (2009)
- [24]
K. Matsuo, L. Barolli, F. Xhafa,
A. Koyama, A. Durresi,
Implementation of a JXTA-based P2P
e-Learning System and
-
Its Performance Evaluation, International
Journal
of Web Information Systems,
Vol. 4, No. 3, pp. 352-371, 2008.
[23] F. Xhafa. A Hyper-heuristic for Adaptive Scheduling in Computational Grids, International Journal on Neural and
-
Mass-Parallel
Computing and Information
Systems, 17(6),
639-656, 2007
[22] F. Xhafa, E. Alba, B. Dorronsoro, B. Duran, Efficient Batch Job Scheduling in Grids Using Cellular Memetic Algorithms,
-
Journal
of
Mathematical Modelling and
Algorithms, 7(2):217-236,
Kluwer Academic Publishers, 2008.
ISSN: 1570-1166.
[21] F. Xhafa, L. Barolli, and A. Durresi, An Experimental Study On Genetic Algorithms for Resource Allocation On Grid -
Systems, Journal
of Interconnection Networks,
Volume: 8, Issue: 4, 427 -
443, World Sci. Pub.
[20] M. Serna, F. Xhafa, Parallel Approximation to High Multiplicity Scheduling Problems via Smooth Multi-valued
-
Quadratic Programming. Theoretical
Informatics and Applications,
Vol. 42, 237-252, 2007, EDP
Sciences.
[19] T. Yang, L. Barolli, M. Ikeda, A. Durresi, F. Xhafa. Performance Evaluation of Reactive and Proactive Protocols for - Ad-Hoc Sensor Networks Using Different Radio Models. Journal of Interconnection Networks, Volume: 8, Issue: 4,
-
387-405, World Sci.
Pub.
[18] F. Xhafa, J. Carretero, L. Barolli and A. Durresi. Requirements for an Event-Based Simulation Package for Grid -
Systems. Journal
of
Interconnection Networks,
Vol.8, No.2, 163-178, 2007, World
Scientific Pub.
[17] J. Gabarró, I. Vallejo, F. Xhafa, On Using Partial Orders for Web Application Design to Enhance Navegability and and -
Extensibility.
International Journal of Web
Information Systems. Vol.3
No.1/2,
8-25, Emerald Group Pub., 2007
[16] F. Xhafa, J. Carretero, A. Abraham. Genetic Algorithm Based Schedulers for Grid Computing Systems. International
-
Journal
of
Innovative Computing,
Information and Control,
Vol. 3, No.5, pp. 1-19, 2007.
[15] F. Xhafa, J. Carretero, L. Barolli and A. Durresi. Immediate Mode Scheduling in Grid Systems. International Journal of
-
Web
and Grid Services, Vol.3
No.2, 219-236, 2007.
[14] F. Xhafa, L. Barolli and A. Durresi. Batch Mode Schedulers for Grid Systems. International Journal of Web and Grid
-
Services, Vol. 3,
No. 1, 19-37, 2007.
[13] L. Barolli, F.Xhafa, A. Durresi, G. De Marco M3PS: a JXTA-based Multiplatform P2P System and Its Web Application
-
Tools, International Journal
of Web Information Systems
(IJWIS), Vol.3, No.1,
2007.
[12] M. Blesa, J. Petit and F. Xhafa. Generic Parallel Implementations for Tabu Search. Journal of Computer Systems
-
Science
and
Engineering, 21(6),
413-432, 2006.
[11] Alba, F. Almeida, M. Blesa, C. Cotta, M. Díaz, I. Dorta, J. Gabarró, J. González, C. León, L. Moreno, J. Petit, J. Roda,
-
A.Rojas,
F. Xhafa. Efficient Parallel
LAN/WAN Algorithms for
Optimization. The MALLBA
Project. Parallel
Computing,
-
32(5-6):415-440,
June 2006.
[10] J. Carretero and F. Xhafa. Using Genetic Algorithms for Scheduling Jobs in Large Scale Grid Applications. Journal of - Technological and Economic Development --A Research Journal of Vilnius Gediminas Technical University, ISSN
-
1392-8619, Vol. 12,
No. 1, p. 11-17, 2006.
[9] Maria Serna, Luca Trevisan and Fatos Xhafa: Approximability of Non-Boolean Satisfiability Problems and Restricted
-
Integer Programming. Theoretical
Computer Science, 332:
123– 139, 2005
[8] Maria Serna and Fatos Xhafa: Parallel Approximability of the False and True Gates Problems in Nor-Circuits. Parallel
-
Processing
Letters. Vol. 12, No. 1
(2002) 127-136
[7] Maria Serna and Fatos Xhafa: Approximating Scheduling Problems in Parallel. Computational Optimization and
-
Applications, Vol 21 (3),
325-338, 2002
[6] Maria Serna and Fatos Xhafa: The Parallel Approximability of a Subclass of Quadratic Programming. Theoretical
-
Computer
Science, 259:217-231,
2001
[5] Luca Trevisan and Fatos Xhafa: The Parallel Complexity of Positive Linear Programming. Parallel Processing Letters
-
Vol. 8(4):527-533, 1998
[4] Maria Serna and Fatos Xhafa: Average Case Analysis for Some P-complete Problems. Theoretical Informatics and
- Applications, Vol. 33(1):33-45, 1999
- [3] Th. Daradoumis, A. Martínez-Monés, and Fatos Xhafa: A Layered Framework for Modelling Online Collaborative
-
Learning
Interactions. International
Journal
of Man-Machine Studies
64(7): 622-635 (2006), Elssevier.
- [2]
T. Daradoumis, F. Xhafa and J.M.
Marqués: A Framework for
understanding Cooperation and
Coordination in
a
- Project-based Collaborative Learning Situation, Int. J. Cont. Engineering Education and Lifelong Learning, Vol. 12, No.
-
5/6, 2002 389, Inderscience
Publishers.
[1] Alan Zemel, F. Xhafa and M. Cakir, What's in the mix? Combining coding and conversation analysis to investigate -
chat-based problem
solving, Journal of Learning and
Instruction, Volume 17,
Issue 4, 405-415, August 2007,
Elsevier
Research & Services
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